Relativistic Cosmology Questions
Most recent answer: 07/23/2016
- jason lusky (age 46)
1. Your verbal description of gravity as a symptom of the different time rates at different locations does have something in common with our best theory of gravity, General Relativity. In fact, it comes fairly close to being the description of the behavior of massive particles. Energy also curves space, and that actually doubles the effect of gravity on light. In addition there are momentum-related terms ("frame-dragging") needed to keep everything consistent in different reference frames.
2. Dark matter can't just be from extra energy of light rays, etc. They don't amount to much. It's got to be something with rest mass, to account for why it stays clustered in with the galaxies.
3. All standard cosmological calculations already take into account that we are not at rest with respect to the average of all the matter in our neighborhood, and that our neighborhood has non-uniform mass density. The apparent expansion and its acceleration are not due to these effects.
(published on 07/23/2016)